massive lag on mac running ios app on m1 mac

[bj97301]

What React Native libraries do you use?

Expo (mobile only)

Are you using sentry.io or on-premise?

sentry.io (SaS)

@sentry/react-native SDK Version

6.14.0

How does your development environment look like?

⬇  Place the `npx react-native@latest info` output here. ⬇

npx react-native@latest info     
info Fetching system and libraries information...
System:
  OS: macOS 26.1
  CPU: (20) arm64 Apple M1 Ultra
  Memory: 10.01 GB / 128.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.19.4
    path: ~/.nvm/versions/node/v20.19.4/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.nvm/versions/node/v20.19.4/bin/yarn
  npm:
    version: 11.6.2
    path: ~/.nvm/versions/node/v20.19.4/bin/npm
  Watchman:
    version: 2024.10.21.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.1
      - iOS 26.1
      - macOS 26.1
      - tvOS 26.1
      - visionOS 26.1
      - watchOS 26.1
  Android SDK:
    API Levels:
      - "30"
      - "31"
      - "32"
      - "33"
      - "33"
      - "34"
      - "35"
      - "36"
    Build Tools:
      - 27.0.3
      - 28.0.3
      - 29.0.3
      - 30.0.2
      - 30.0.3
      - 31.0.0
      - 32.0.0
      - 33.0.0
      - 33.0.1
      - 33.0.2
      - 34.0.0
      - 35.0.0
      - 36.0.0
    System Images:
      - android-33 | Google APIs ARM 64 v8a
      - android-34 | Google APIs ARM 64 v8a
      - android-UpsideDownCake-ext5 | Google APIs ARM 64 v8a
      - android-UpsideDownCake-ext5 | Google Play ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2025.1 AI-251.26094.121.2513.14007798
  Xcode:
    version: 26.1/17B55
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 21.0.7
    path: /usr/bin/javac
  Ruby:
    version: 2.7.6
    path: /Users/Bryan/.rvm/rubies/ruby-2.7.6/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 20.0.2
    wanted: ^20.0.2
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.5
    wanted: 0.79.5
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: Not found
  newArchEnabled: Not found
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found

info React Native v0.82.1 is now available (your project is running on v0.79.5).
info Changelog: https://github.com/facebook/react-native/releases/tag/v0.82.1
info Diff: https://react-native-community.github.io/upgrade-helper/?from=0.79.5&to=0.82.1
info For more info, check out "https://reactnative.dev/docs/upgrading?os=macos".

Sentry.init()

Sentry.init({
  dsn: 'https://:@ingest.us.sentry.io/',
  tracesSampleRate: 1.0,
  enabled: true,
  debug: environmentConfigs.isProduction(),
  environment: environmentConfigs.environment,
  dist: Platform.OS,
  normalizeDepth: 0,
  replaysSessionSampleRate: isBjEnvironmentOnIpad ? 0 : 0.1, // turned off on my mac's app while on local dev environemnt
  replaysOnErrorSampleRate: isBjEnvironmentOnIpad ? 0 : 1.0,
  integrations: [
    Sentry.mobileReplayIntegration({
      maskAllText: false,
      maskAllImages: false,
      maskAllVectors: false,
    }),
    Sentry.userInteractionIntegration(),
  ],
  initialScope: {
    tags: {
      releaseVersion,
      deviceId: Constants.sessionId,
    },
  },
})

my metro config:

const { getSentryExpoConfig } = require("@sentry/react-native/metro");

// Get Sentry config as base
const config = getSentryExpoConfig(__dirname);

// Add .bin to the assetExtensions array
if (config.resolver && config.resolver.assetExts) {
  config.resolver.assetExts = [...config.resolver.assetExts, 'bin'];
}

// Ensure .bin files are treated as assets, not source code
if (config.resolver && config.resolver.sourceExts) {
  config.resolver.sourceExts = config.resolver.sourceExts.filter(ext => ext !== 'bin');
}

module.exports = config;

Steps to Reproduce

1. enable replay in the init
2. use the iphone app on your silicone mac(thinks its an ipad 12.9")
3. notice the massive lag(worse with expermintal replay options turned on)

Expected Result

not massively laggy

Actual Result

massively laggy compared to when replays are off

[linear]

RN-392